Antisiphonic plumbing unit



Marczilv 5, 194.6.

J. C.` OWENS ANTISIPHONIC PLUMBING UNIT Filed Dec. 12. 1942 IVENroR.JESSE C`- OWENS BY Patented Mar. 5,

AN'rlsIrnoNIc PLUMBING UNIT Jesse C. Owens, Los Angeles, Calif.Application December 12, 1942,-sena1N. 46am v 5 Claims.

My invention'relates to an anti-Siphonic unit for plumbing iixtures,particularly, the ball cock valves and silencers of toilet' tanks, andthe principal objects of my invention are to provide a relativelysimple, practical and inexpensive antisiphonic unit which may beconstructed from plastics, or other non-corrodible materials, andfurther, to generally improve upon and simplify the construction of thevalve covered by United States Letters Patent #2,290,145' issued to meJuly 14, 1942, also U. S. Letters Patent, #2,329,- 337 issued to LorenE.'Criss and myself Septem ber 14, 1943.

A further object of my invention isv to provide an anti-Siphonic unit,which, in addition to being particularly applicable for use inconnectionl with the ball cock valves of toilet tanks, may be utilizedwith equal ad'vantage in any plumbing xture or structure for controllingthe ilow of' water through the structure, and at the same time, toautomatically counteract suction due to siphonic action from drawingcontaminated water through the structure to pollute they water supplyfrom the main to which the xture is.

connected. y

A further oblect of my inventionis to provide a relatively' simple,practical and eillcient valvular member composed of rubber, eithernatural or thetic, and which ma be read combined syn y uy y so tures 21which coincide with apertures I3.'

tures, and which will act automatically to -perwith ball ,cock valves,and like plumbing strucmit ow of liquid through the ball cock of theother fixture, and which also permits air to enter the ball cock orother structure for the purpose ofcounteracting suction produced bysiphonic With the foregoing and other objects in view, my inventionconsists in certain novel features of construction and arrangementofparts', which will be hereinafter more fully described and claimed,and illustrated in the accompanying drawing, in which: v

Fig. 1 is a vertical section taken through the center of a ball cock andshowing my improved anti-Siphonic unit associated therewith.

Fig. 2 is a horizontal section taken 4approximately on the line 2--2 ofFig. 1.

Fig. 3 is an elevational Vview taken on the line 3-3 of Fig. 1.

Y Referring by numerals to the accompanying drawing, 'I0 designates atube havinglts lower end secured to the bottom of the flushing tank andwhich is connected to a Supply main for delivering flushing water tothetank through a oat .controlled ball cock. 7

Detachably connected to the upper end oflsaid tube is an extension Il,provided-at, its end with an outwardly prolecting flange I2. in which isformed a circular row ot apertures Il.v A

`suitably secured with -the upper portion of extension tube II is ashort upwardlyprojecting .v

tube Il, oi porcelain, glass or the like and the upper end of this tubeprovides a seat il, for a packing disc I5, of leather, rubber or thelike that is seated in the lower end of a piston valve Il.

This piston valve is arranged for operation in a short verticallydisposed cylinder I'I that is v formed in the center of a valve housingcap I?.

50 The immediate per. portions of apertures 2l.

Valve I6 .is normallymaintained on its seat by a toggle pin I9 that ispositioned between said valve and a pivoted iioat carryingv head 2U, asmore fully disclosed in patentNo. 2,329,337, above referred to. t v Thewall of cap Il is screw-seated in the upper portion of a coupling collar2i, the latter having at its lower end, an inwardly projecting iiange 22that engages beneath a ange 23 which projects outwardly from the upperend of a hush tube 24. and the latter surrounding andbeing 25 spaced'apart from, water inlet tube i0.

Surrounding extension tube Il isa tube 25, and extending outwardly fromthe upper end thereof is a ange 28. that lies against the underside'ofange I2' and said flange 2B having aperl The lower wall of capv Il bearsdirectly upon the outer portion of flange I2. Ibrmedon the lower portionof the outer faceof tube 2Iis a circumferential row of spacing lugs 2l.

Formed through the wall of hush tube 2l a' so short distance belowflange 22, is a circumfer-v 40 flanges 26 and I2 is the flanged upperend 2|., of a substantially tubular member 22 of natural or syntheticrubber and which incertain respects performs the functions of a checkvalve.

'I'he lower portion of member 22 is somewhat smaller in diameter thanvthe upper portion and the wall of said lower portion gradually decreasesin thickness toward its lower end and the latter being curved inwardlyso as to bear against the surface of tube 25, below spacing lugs 28.

portion of tube 22 occupies a concentric position between tube 2l andthe upper portion of hush tube 24 and formed integral with thisintermediate portion, is a series of outwardly projecting ifugs Il whichexten below said aperthrough the up-' rae promus: ema of :im is provides sup; port for a guard ring Il, which is substantially ci invertedLshape in cross section and the depending wall oi this ring occupies apositiona short .distance outwardly from the apertures .24 with thelower end of said ring terminating in the same horizontal plane with ribIl; Ring ll is made separate and mounted on lugs 34 in order tofacilitate assembly and disassembly ot the various parts o! the valveand ,when in properposition, said ring serves as a baille for airflowing through the space between collar 2| and surrounding tube 38,also through the apertures 2l. Rib il acts as a stop to limit outwardmovement of elastic member 32 when expanded outward by pressureof waterpassinrthrough the valve.

Rigidly secured to hush tube 24, just below rib lo is the inwardlyturned lower end or a tube 36 which .surrounds and is spaced apart fromcoupling collar 2| and guard ring IS.

Under normal conditions, packing disc it resting on seat 44 prevents theilow of water from tube i intol the valve chamber below cap Il andas thelower end 3l of member $2 bears against tubular member 25l below spacinglugs 2l, it is impossible for air to pass into the valve chamber withinmember l2, and below capsid.

When valve it moves oil its seat I4'L as a result or the lowering of theiloat in the tank,. water under pressure from the main dischargesthrough tubular member i4 into the valve chamber, thence downwardlythrough apertures Itand 2l, thence downwardly through the space betweentube 25 and elastic member l2 and the pressure of :his water will ilexthe tapered lower end 33' of said member I2 outwardly, therebypermitting water to ilow downwardly between tube iu' and the hush anddischarge from the lower end of the latter into the tank.

Should siphonic conditions develop in the supply tube and tend to drawwater from the tank and bowl backwardly through the supply tube, airentering apertures 29 and owing downward through the space between tubeIll and hush tube, will counteract and break such siphonic conditionsand thereby prevent contamination of water in the supply" main.

It is to be noted that in my improved construction, water entering thevalve chamber, beneath cap I8, ilows directly downward through aper-4tures I3 'and 21 and thence downward through the annular space betweenthe wall oi resilient member 32 and tube 25 to the space between tube I0and hush tube I24.

The flow of water downwardly around tube Ill,

44 that is formed by a portion oi tube 40 and VA piston valve 44,operated by a tloat within the tank and practically identical inconstruction and operation with. valve i8 and illustrated in Fig. l,normally rests on a seat 45 to close the now o! water from tube into thechamber within cup This piston valve operates within a cylinder formedthrough the wall of this cylinder lust bclow seat 4I and within member4i, is a circumferential row of apertures 40".

Secured to the upper portion of cylinder 48 by cement or otherwise is acover cap 41, having a depending marginal flange 48. 'I'he flaring upperend 49* of a hush tube tu, is secured to the underside of cap 41 andextends downward around and spaced apart from tube 40. Lugs lll*maintain the hush tube in spaced relation relative to tube 40. Famedthrough the upper ilaring portion 49* of the wall of hush tubeili behindthe depending wall 48 of cap 41 is a series of air inlet apertures 49h.

- Secured to the underiace of cap 41 around cyl# inder 46 is the flangedtop of a ring-shaped member 5i of natural or synthetic rubber, the wallof which extends downward in the space between cup 4i and the upperportion of the-hush tube. The wall of member El, which creases inthickness toward its lower end, normally rests against the lugs 443 andthe thin lower end of said wall is curved inwardly as designated 35 isprovided with a duet s3, which leads to the reen is highly effective incounteracting the hissing 'l and gurgling noises which usually attendthe ilowof water under pressure from the supply pipe to and through thevalve housing. By producing all parts o! my improved valve, with theexception of the valve seat member i4, from plastic substances or thelike, the undesirable results of corrosion, which usually attend the useof metal, that is constantly subjected to moisture is eliminated.

I n the modiiled construction illustrated in Figs.

tube (not shown) and said duct is connected by a short duct 54, to thechamber between cylinde 46 and resilient ring 5|.

Ring 1i is made separate and supported by lugs 10 in order to simplifyconstruction and also enabling the parts to be readily assembled andtaken apart.

Where the parts of my improved anti-siphonic -unit are formed oiplastics or analogous, noncorrodible material, said parts may be rigidlyconnected by the use of acetone or with a suitable waterproof cement.

Thus it will be seen that I have provided an anti-Siphonic unit forplumbing xtures and appliances, that is simple in structure, inexpensiveof manufacture and very eiective in performing the functions for whichit is intended.

It will be understood that minor changes in the size, form andconstruction of the various parts of my improved anti-Siphonic unit maybe made and substituted for those herein shown and described withoutdeparting from the spirit of the invention, the scope of which is setforth in the appended claims.

I claim as my invention:

l. The combination with a vertically disposed duct of a valve housinglocated on the upper end of said duct, valvular means for controllingthe discharge of liquid from said duct into said valve housing, a tubecommunicating with said housing and concentrically disposed about saidduct and spaced apart therefrom, a substantially tubular member formedof resilient material located between the upper portion of said duct andsaid `concentric tube with the intermediate portion of said tubularmember spaced apart from said duct and said tube and with the lower endoi said resilient member normally bearing on said duct and means formaintaining that portion ofthe gradually def 2. An anti-sipnomc plumbingunit as set'fmn in claim 1 wherein the upper `portion oi' said resilientmember is secured to said valve4 housing.

3. An anti-siphonic plumbing unit as set forthv in claim 1 and withmeans for admitting air to the space between said duct and concentrictube at a point above the lower end of said resilient member.

4. An anti-si'phonic plumbing unit as set forth in claim 1 with meansfor admittingv air to the space between said duct and concentric'tube atasaspos resilient tube above the lower end thereof,l in -spaced relationrelative to said duct.

openings.

5. An anti-siphonic plumbing unit as set forth in claim ijwith saidconcentrically disposed tube provided with air admission openingscommunieating with the space between the lower portion of said resilienttubular'member and said concentrically disposed tube. lugs projectingfrom 4said resilient member through said air admission openings and adeector supported by said lugs and disposed outwardly from saidadmission lJFssE c. OWENS.

